diff options
Diffstat (limited to 'arch/um/kernel/tt/trap_user.c')
| -rw-r--r-- | arch/um/kernel/tt/trap_user.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/um/kernel/tt/trap_user.c b/arch/um/kernel/tt/trap_user.c index a414c529fbcd..b5d9d64d91e4 100644 --- a/arch/um/kernel/tt/trap_user.c +++ b/arch/um/kernel/tt/trap_user.c @@ -18,7 +18,7 @@ void sig_handler_common_tt(int sig, void *sc_ptr) { struct sigcontext *sc = sc_ptr; struct tt_regs save_regs, *r; - int save_errno = errno, is_user; + int save_errno = errno, is_user = 0; void (*handler)(int, union uml_pt_regs *); /* This is done because to allow SIGSEGV to be delivered inside a SEGV @@ -35,7 +35,8 @@ void sig_handler_common_tt(int sig, void *sc_ptr) GET_FAULTINFO_FROM_SC(r->faultinfo, sc); } save_regs = *r; - is_user = user_context(SC_SP(sc)); + if (sc) + is_user = user_context(SC_SP(sc)); r->sc = sc; if(sig != SIGUSR2) r->syscall = -1; |